CN215482379U - Interim support of sand bucket of adjustable height - Google Patents

Abstract

The utility model relates to a sand bucket temporary support with adjustable height, which is characterized by comprising the following components: the barrel body is provided with an inner cavity; the bung, the bung includes: the supporting part is used for supporting the precast beam, the piston part is fixed on one side of the supporting part close to the barrel body, the piston part is slidably inserted into the inner cavity, sand grains are filled in the piston part, a hole for the sand grains to flow between the piston part and the inner cavity is formed in the bottom of the piston part, and after the sand grains enter the inner cavity, the bottom of the piston part is supported on the sand grains in the inner cavity; and the adjusting mechanism is arranged in the barrel cover and used for opening or closing the hole to enable sand particles to flow and adjust the height of the sand barrel temporary support. Therefore, the sand bucket temporary support has the advantages of low manufacturing cost, no environmental pollution, short construction time, easy disassembly, repeated use and convenient height adjustment.

Description

Interim support of sand bucket of adjustable height

Technical Field

The utility model relates to the field of supporting equipment, in particular to a sand bucket temporary support with adjustable height.

Background

The erection of precast beams in the construction of continuous beam bridges usually requires temporary supports as temporary engineering for bridge erection. When the prefabricated beam is used, the temporary support and the permanent support are required to be installed at the same time, the prefabricated beam is erected on the temporary support, and after the wet joint and the prestress tensioning of the prefabricated beam are completed, the temporary support is detached, so that the prefabricated beam falls on the permanent support, and the system conversion of the structure is completed.

In the related art, the common temporary supports include a sulfur mortar support, a concrete block support, a wood pier support and a sand bag support. However, the disadvantages of the existing temporary supports are: 1. a sulfur mortar temporary support: the manufacturing cost is high and the environment is not protected; 2. concrete block temporary support: the construction time is long and the height is not easy to adjust according to the actual working condition; 3. wood pier temporary support: the requirement on the material and the water content of wood is high, the wood is difficult to remove, and time and labor are wasted particularly when the wood pier is short and the abutment is high; 4. sandbag temporary support: the sand bag has high manufacturing process requirements, needs high sand content, has high requirements on the water content and the compactness of the sand, and cannot be recycled.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a sand bucket temporary support with adjustable height, which aims to solve the problems that the temporary support in the related technology is high in manufacturing cost, not environment-friendly, long in construction time, not easy to dismantle, not reusable and not easy to adjust the height.

In a first aspect, there is provided a height adjustable temporary support for a sand bucket comprising: a barrel having an inner cavity; a tub cover, the tub cover comprising: the supporting part is used for supporting the precast beam, the piston part is fixed on one side of the supporting part close to the barrel body, the piston part is slidably inserted into the inner cavity, sand grains are filled in the piston part, a hole for the sand grains to flow between the piston part and the inner cavity is formed in the bottom of the piston part, and after the sand grains enter the inner cavity, the bottom of the piston part is supported on the sand grains in the inner cavity; and the adjusting mechanism is arranged in the piston part and is used for opening or closing the hole, so that the sand grains flow and the height of the temporary sand bucket support is adjusted.

In some embodiments, when the adjusting mechanism opens the hole, the piston part is lifted, so that the sand grains in the piston part flow into the inner cavity through the hole, and the height of the temporary sand bucket support is raised; or the temporary sand bucket support is inverted, so that the sand grains in the inner cavity flow into the piston part through the hole, and the height of the temporary sand bucket support is reduced.

In some embodiments, the hole has a truncated cone shape, and the end of the hole with the smaller opening faces to a direction close to the bottom of the barrel body, and the end of the hole with the larger opening faces to a direction close to the support portion.

In some embodiments, the adjustment mechanism comprises: the sealer is positioned at the hole, the size of the sealer is matched with that of the hole, and the sealer is used for blocking the hole; the bolt is fixed with the sealer, the end part, far away from the sealer, of the bolt is movably inserted into the barrel cover, and the bolt is used for driving the sealer to open or close the hole.

In some embodiments, a threaded hole is formed in the top of the supporting portion, an end portion of the bolt, which is away from the sealer, is screwed into the threaded hole, and the bolt is screwed to drive the sealer to move in the vertical direction, so that the sealer opens or closes the hole.

In some embodiments, a recess is provided in an end of the latch remote from the sealer, the recess being adapted to cooperate with a turning tool to turn the latch.

In some embodiments, the adjustment mechanism further comprises: and the sand homogenizing rod is fixed on the bolt and is positioned at one side of the bolt close to the sealer, and the sand homogenizing rod is used for increasing the flow of sand grains.

In some embodiments, the bottom of the bucket body has a stabilizing platform having an outer diameter greater than the outer diameter of the bucket body, the stabilizing platform for providing a more stable placement of the bucket body.

In some embodiments, the height of the piston portion is greater than or equal to the height of the barrel.

In some embodiments, a sealing ring is arranged at the contact position of the piston part and the barrel body.

The technical scheme provided by the utility model has the beneficial effects that:

the embodiment of the utility model provides a sand bucket temporary support with adjustable height, which comprises: a barrel having an inner cavity; the top of the barrel cover is used for supporting the precast beam, the barrel cover part is slidably inserted into the inner cavity, sand grains are filled in the barrel cover, a hole is formed in the bottom of the barrel cover, the sand grains can flow between the barrel cover and the inner cavity through the hole, and after the sand grains enter the inner cavity, the bottom of the barrel cover is supported on the sand grains in the inner cavity; the adjusting mechanism is arranged in the barrel cover and used for opening or closing the hole to enable the sand to flow, and the height of the sand barrel temporary support is adjusted by adjusting the height of the sand in the inner cavity, so that the sand barrel temporary support is low in manufacturing cost, short in construction time, easy to detach, reusable and convenient to adjust.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of an opening hole of a temporary support of a sand bucket with adjustable height according to an embodiment of the utility model;

FIG. 2 is a top view of a piston part in a temporary stand of a sand bucket with adjustable height according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a closing hole of a temporary support of a sand bucket with adjustable height according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an adjusting mechanism for a temporary support of a sand bucket with adjustable height according to an embodiment of the present invention;

FIG. 5 is a top view of a support part of a temporary stand of a sand bucket with adjustable height according to an embodiment of the present invention;

fig. 6 is a top view of an adjusting mechanism in a temporary support for a sand bucket with adjustable height according to an embodiment of the present invention.

In the figure:

1. a barrel body; 2. a barrel cover; 21. a piston portion; 22. a support portion; 23. an aperture; 3. sand grains; 4. an adjustment mechanism; 41. a sealer; 42. a bolt; 43. and (5) a sand homogenizing rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The embodiment of the utility model provides a sand bucket temporary support with adjustable height, which can solve the problems that the temporary support is high in manufacturing cost, easy to damage, potential safety hazard, environment pollution, long in construction time, not easy to dismantle, not reusable and not easy to adjust the height.

Referring to fig. 1 to 3, a temporary support for a sand bucket with adjustable height according to an embodiment of the present invention may include: the barrel body 1 is cylindrical in the embodiment, in other embodiments, the barrel body 1 can be cubic or in other shapes, and the barrel body 1 can have an inner cavity; the barrel cover 2, the barrel cover 2 may include: the supporting part 22 and the piston part 21, the supporting part 22 may be used to support the precast beam, the outer diameter of the supporting part 22 is larger than the outer diameter of the barrel body 1, the piston part 21 may be fixed on one side of the supporting part 22 close to the barrel body 1, the piston part 21 may be welded and fixed on the supporting part 22, in other embodiments, the piston part 21 and the supporting part 22 may be integrally cast, the outer diameter of the piston part 21 may match the inner diameter of the inner cavity, the piston part 21 may be slidably inserted into the inner cavity, the piston part 21 and the barrel body 1 may move relatively, sand particles 3 may be contained in the piston part 21, and the bottom of the piston part 21 may be provided with a hole 23 for the sand particles 3 to flow between the piston part 21 and the inner cavity, and after the sand particles 3 enter the inner cavity through the hole 23, the bottom of the piston part 21 may be supported on the sand particles 3 in the inner cavity; the adjusting mechanism 4 can be arranged in the barrel cover 2, the adjusting mechanism 4 can be used for opening or closing the hole 23 to enable the sand grains 3 to flow into the inner cavity or flow out of the inner cavity through the hole 23, the height of the sand barrel temporary support can be adjusted by controlling the height of the sand grains 3 in the inner cavity, the sand barrel temporary support is mainly manufactured by the barrel body 1, the barrel cover 2 and the sand grains 3, therefore, the sand barrel temporary support is low in manufacturing cost and simple and difficult to damage in structure, the sand barrel temporary support is made of the sand grains 3 which can not pollute the environment, the sand barrel temporary support can be manufactured in advance, the sand barrel temporary support can be used after being arranged at a corresponding position, the construction time is short, the sand barrel temporary support is not required to be fixed in an additional mode and can be easily detached after being used, the height of the sand barrel temporary support can be freely adjusted through the adjusting mechanism 4, the height can be conveniently adjusted and can be reused, and no potential safety hazard exists.

Referring to fig. 1 to 3, in some embodiments, when the height of the temporary support of the sand bucket needs to be raised, the hole 23 may be opened by the adjusting mechanism 4, the height of the piston portion 21 is raised, so that the sand 3 in the piston portion 21 may flow into the inner cavity through the hole 23, the sand 3 in the inner cavity is increased, that is, the height of the sand 3 in the inner cavity may become higher, after the piston portion 21 is adjusted to a proper height, a certain time is waited, and when the inner cavity is filled with the sand 3, the bottom of the piston portion 21 may be supported on the sand 3 in the inner cavity, that is, the height of the piston portion 21 may be raised, so that the height of the temporary support of the sand bucket is raised; when the height of the temporary sand bucket support needs to be reduced, the hole 23 can be opened through the adjusting mechanism 4, the bucket body 1 and the bucket cover 2 can be inverted, so that sand grains 3 in the inner cavity can flow into the piston part 21 through the hole 23, the sand grains 3 in the inner cavity are reduced, the height of the sand grains 3 in the inner cavity can be reduced, namely the height of the piston part 21 can be reduced, and the height of the temporary sand bucket support is reduced; after the height is adjusted, the hole 23 can be closed through the adjusting mechanism 4, so that the sand grains 3 in the inner cavity can not flow, and the sand grains 3 in the inner cavity can provide stable supporting force to support the piston part 21, therefore, the hole 23 is opened or closed through the adjusting mechanism 4, the height of the sand grains 3 in the inner cavity is controlled, the height of the temporary sand bucket support can be freely increased, or the height of the temporary sand bucket support is reduced, the height of the temporary sand bucket support can be freely adjusted, and no potential safety hazard exists.

Referring to fig. 1 to 3, in some embodiments, the hole 23 is in a truncated cone shape, and the end of the hole 23 with the smaller opening may face a direction close to the bottom of the tub 1, and the end of the hole 23 with the larger opening may face a direction close to the support 22, in other embodiments, the hole 23 may be in other shapes, and only the openings of the two ends of the hole 23 need to be maintained to be different in size, and the end of the hole 23 with the smaller opening faces a direction close to the bottom of the tub 1, and the end of the hole 23 with the larger opening faces a direction close to the support 22, and such an opening structure of the hole 23 may facilitate the flow of sand 3 and facilitate the opening or closing of the hole 23 by the adjustment mechanism 4.

Referring to fig. 3 and 4, in some embodiments, the adjustment mechanism 4 may include: a sealer 41, the sealer 41 can be positioned at the hole 23, the sealer 41 is positioned at one side of the hole 23 close to the supporting part 22, the size of the sealer 41 can be matched with the size of the hole 23, the sealer 41 can be used for blocking the hole 23 and preventing the sand grains 3 from flowing through the hole 23; the latch 42 and the latch 42 may be fixed to the sealing device 41, in this embodiment, one end of the latch 42 away from the supporting portion 22 is inserted into the sealing device 41, in other embodiments, the latch 42 may be fixed to the sealing device 41 in other manners, and the end of the latch 42 away from the sealing device 41 may be movably inserted into the tub cover 2, so that the sealing device 41 may be driven to open or close the hole 23 by moving the latch 42, which is convenient to operate.

Referring to fig. 3 to 5, in some embodiments, a threaded hole may be formed at the top of the supporting portion 22, in this embodiment, the central axis of the threaded hole is coaxial with the central axis of the hole 23, the end of the plug pin 42 away from the sealing device 41 may be provided with a thread, the plug pin 42 may be in threaded connection with the threaded hole through a thread, the plug pin 42 may be rotated in the threaded hole by screwing the plug pin 42 in one direction, the plug pin 42 may be raised integrally during the rotation, the plug pin 42 may be lowered integrally during the reverse rotation by screwing the plug pin 42 in the reverse direction, the sealing device 41 may be driven to move in the vertical direction by the above-mentioned manner of screwing the plug pin 42, the sealing device 41 may open or close the hole 23 during the movement in the vertical direction, in this embodiment, when the plug pin 42 drives the sealing device 41 to be in a state of closing the hole 23, the plug pin 42 is located entirely within the threaded hole and the tub cover 2, it is possible to maintain the supporting surface of the supporting portion 22 in a horizontal plane, and to prevent the supporting surface of the supporting portion 22 from being protruded to affect the supporting effect, by which the sealer 41 can be more easily driven to open or close the hole 23.

Referring to fig. 5 and 6, in some embodiments, an end of the latch 42 away from the sealer 41 may be provided with a groove, in this embodiment, the groove is cross-shaped, in other embodiments, the groove may be other non-circular shapes, a screwdriver-like tool may be used to match the groove, and the latch 42 may be rotated by rotating the latch 42, so that the latch 42 may be rotated in a more labor-saving manner, and further, the latch 42 may be rotated conveniently.

Referring to fig. 4 and 6, in some embodiments, the adjustment mechanism 4 may further include: a sand leveling rod 43, the sand leveling rod 43 can be fixed on the bolt 42, and the sand leveling rod 43 is positioned at one side of the bolt 42 close to the sealer 41, in the embodiment, the bolt 42 penetrates through the sealer 41, and the bolt 42 is partially positioned in the barrel body 1, two sand homogenizing rods 43 can be arranged, the middle parts of the two sand homogenizing rods 43 are fixed on the bolt 42, and one of the sand homogenizing rods 43 is positioned in the piston part 21, the other sand homogenizing rod 43 is positioned in the barrel body 1, in other embodiments, the number and the installation position of the sand homogenizing rods 43 can be set according to actual conditions, the sand homogenizing rods 43 can be used for increasing the fluidity of the sand grains 3, when the rotary bolt 42 drives the sealer 41 to open or close the hole 23, the sand homogenizing rod 43 can be rotated to stir the sand grains 3, so that the flowability of the sand grains 3 is increased, the sand grains 3 can flow into or out of the inner cavity conveniently, and the height of the temporary support of the sand bucket can be further adjusted conveniently.

Referring to fig. 1, in some embodiments, the bottom of the bucket body 1 may have a stabilizing platform, in this embodiment, the stabilizing platform is circular, in other embodiments, the stabilizing platform may be square or other shapes, the outer diameter of the stabilizing platform may be greater than the outer diameter of the bucket body 1, the stabilizing platform may be used to stabilize the bucket body 1, so that the bucket body 1 is placed more stably, and the temporary support structure of the sand bucket is more stable.

In some embodiments, the sealer 41 may be made of wear-resistant rubber material, the sealer 41 may move in the sand 3 for a long time and rub against the sand 3, the sealer 41 may be frequently subjected to friction loss, and the sealer 41 is made of wear-resistant rubber material, so that the wear resistance of the sealer 41 may be improved, the friction loss may be reduced, and the service life of the sealer 41 may be prolonged.

Referring to fig. 1, in some embodiments, the height of the piston portion 21 may be greater than or equal to the height of the bucket body 1, and when the height of the temporary support for the sand bucket is lowered, it may be avoided that the piston portion 21 is entirely located in the bucket body 1, which may cause the supporting portion 22 to be also located in the bucket body 1 or the supporting portion 22 collides with the bucket body 1.

In some embodiments, the contact position of the piston portion 21 and the barrel body 1 may be provided with a sealing ring, the sealing performance of the sand barrel temporary support can be improved by setting the sealing ring, moisture can be prevented from entering the sand barrel temporary support, the sand grains 3 are prevented from being affected with damp by directly contacting with the external air, and the sealing ring is set to keep the sand grains 3 dry, so that the flowability of the sand grains 3 is maintained.

The principle of the sand bucket temporary support with adjustable height provided by the embodiment of the utility model is as follows:

as the height-adjustable sand barrel temporary support comprises: the barrel body 1, the barrel body 1 can be provided with an inner cavity; the barrel cover 2, the barrel cover 2 may include: the supporting part 22 and the piston part 21, the supporting part 22 can be used for supporting the precast beam, the piston part 21 can be fixed on one side of the supporting part 22 close to the barrel body 1, the piston part 21 can be slidably inserted into the inner cavity, sand grains 3 can be filled in the piston part 21, a hole 23 for allowing the sand grains 3 to flow between the piston part 21 and the inner cavity can be arranged at the bottom of the piston part 21, and after the sand grains 3 enter the inner cavity, the bottom of the piston part 21 is supported on the sand grains 3 in the inner cavity; an adjusting mechanism 4 which can be installed in the barrel cover 2, the adjusting mechanism 4 can be used for opening or closing the hole 23, when the height of the sand barrel temporary support is adjusted, the adjusting mechanism 4 opens the hole 23, the piston part 21 is lifted to enable the sand grains 3 to flow into the inner cavity from the piston part 21 through the hole 23, the height of the sand grains 3 in the inner cavity is increased, the height of the sand barrel temporary support can be increased, or the barrel body 1 and the barrel cover 2 are inverted to enable the sand grains 3 to flow into the piston part 21 from the inner cavity through the hole 23, the height of the sand grains 3 in the inner cavity is reduced, the height of the sand barrel temporary support can be reduced, after the height of the sand barrel temporary support is adjusted, the adjusting mechanism 4 closes the hole 23 to enable the sand grains 3 in the inner cavity not to flow, and the sand grains 3 in the inner cavity can provide stable supporting force to support the piston part 21, therefore, the adjusting mechanism 4 opens or closes the hole 23 to control the height of the sand grains 3 in the inner cavity, can conveniently adjust the height of sand bucket temporary support, and sand bucket temporary support can reuse, the main material of making this sand bucket temporary support use is sand grain 3, therefore, the cost of sand bucket temporary support is low and can not the polluted environment, sand bucket temporary support can be made in advance, install sand bucket temporary support and correspond the position and can use after adjusting suitable height, therefore, the engineering time of sand bucket temporary support is short, and do not need extra mode to go fixed sand bucket temporary support, sand bucket temporary support makes and demolishs easily after using up, sand bucket temporary support can provide the supporting role through sand grain 3, sand bucket temporary support's simple structure is not fragile and does not have the potential safety hazard.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A height-adjustable temporary support for sand buckets is characterized by comprising:

the barrel body (1), the barrel body (1) is provided with an inner cavity;

a barrel lid (2), the barrel lid (2) comprising: the sand-blasting machine comprises a supporting part (22) and a piston part (21), wherein the supporting part (22) is used for supporting a precast beam, the piston part (21) is fixed on one side, close to the barrel body (1), of the supporting part (22), the piston part (21) is slidably inserted into the inner cavity, sand grains (3) are filled in the piston part (21), a hole (23) for the sand grains (3) to flow between the piston part (21) and the inner cavity is formed in the bottom of the piston part (21), and when the sand grains (3) enter the inner cavity, the bottom of the piston part (21) is supported on the sand grains (3) in the inner cavity;

and the adjusting mechanism (4) is arranged in the piston part (21), and the adjusting mechanism (4) is used for opening or closing the hole (23), enabling the sand grains (3) to flow and adjusting the height of the temporary sand barrel support.

2. A temporary support for a bucket of adjustable height as claimed in claim 1, wherein:

when the adjusting mechanism (4) opens the hole (23), the piston part (21) is lifted, so that the sand grains (3) in the piston part (21) flow into the inner cavity through the hole (23), and the height of the temporary sand bucket support is lifted;

or the temporary sand barrel support is inverted, so that the sand grains (3) in the inner cavity flow into the piston part (21) through the hole (23), and the height of the temporary sand barrel support is reduced.

3. A temporary support for a bucket of adjustable height as claimed in claim 1, wherein:

the hole (23) is in a circular truncated cone shape, the end with the smaller opening of the hole (23) faces the direction close to the bottom of the barrel body (1), and the end with the larger opening of the hole (23) faces the direction close to the supporting part (22).

4. A temporary stand of sand buckets with adjustable height according to claim 1, characterised in that the adjustment mechanism (4) comprises:

a sealer (41) located at the hole (23), the sealer (41) having a size that matches a size of the hole (23), the sealer (41) for blocking the hole (23);

the bolt (42) is fixed with the sealer (41), the end part, far away from the sealer (41), of the bolt (42) is movably inserted into the barrel cover (2), and the bolt (42) is used for driving the sealer (41) to open or close the hole (23).

5. A temporary support for a bucket of adjustable height as claimed in claim 4, wherein:

the top of the supporting part (22) is provided with a threaded hole, the end part, far away from the sealer (41), of the bolt (42) is in threaded connection with the threaded hole, the bolt (42) is screwed to drive the sealer (41) to move in the vertical direction, and the sealer (41) is enabled to open or close the hole (23).

6. A temporary support for a bucket of adjustable height as claimed in claim 5, wherein:

a groove is formed in one end, away from the sealer (41), of the plug pin (42), and the groove is used for being matched with a rotating tool to rotate the plug pin (42).

7. A temporary stand of sand buckets with adjustable height according to claim 4, characterised in that the adjusting mechanism (4) further comprises:

the sand homogenizing rod (43) is fixed on the plug pin (42) and located on one side, close to the sealer (41), of the plug pin (42), and the sand homogenizing rod (43) is used for increasing the flow of the sand grains (3).

8. A temporary support for a bucket of adjustable height as claimed in claim 1, wherein:

the bottom of the barrel body (1) is provided with a stabilizing platform, the outer diameter of the stabilizing platform is larger than that of the barrel body (1), and the stabilizing platform is used for enabling the barrel body (1) to be placed more stably.

9. A temporary support for a bucket of adjustable height as claimed in claim 1, wherein:

the height of the piston part (21) is greater than or equal to that of the barrel body (1).

10. A temporary support for a bucket of adjustable height as claimed in claim 1, wherein:

and a sealing ring is arranged at the contact position of the piston part (21) and the barrel body (1).

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